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Masters Test > Drivers Training > Flashcards

Drivers Training Flashcards

1
Q

Five primary vehicle systems that impact ability to safety control the apparatus

A

Tires
Wheels
Steering
Suspension
Brakes

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2
Q

Steering system

A

Steering wheel
Steering shaft
Steering box
Steering output shaft
Pitman arm
Drag link
Steering arm

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3
Q

No more than how much play in drag link

A

Less than 1/8 inch play vertically and horizontally

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4
Q

Gvwr vs curb

A

Gvwr- curb plus equipment, cargo, passengers
Curb- components without cargo or passengers

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5
Q

Gap between S buffer and spring and oos

A

1/16-1/2 inch.
Less that 1/16 inch or rubber axle stop touching = defect
Greater than 1/12 inch OOS

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6
Q

Pierce disc brake rear axle replacement

A

1/8th inch (3 mm)

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7
Q

OOS brake rotor

A

Cracked rotor
Heat checks greater than 1/8inch deep
Extend greater than 3/4 inch accross face of rotor

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8
Q

Oos drums

A

Breaks through drum
Crack expand when brake applied
Heat checks greater than 1/2 width
Heat checks greater than 1/8th inch deep

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9
Q

Air brake test

A

Release Peking brake let settle 1 min
More 3 psi loss or 4 for tillers
Apply steady pressure to brakes 1 min
No more 3,4 psi loss
Press release brakes- low air alarm 60-90 psi parking break pop at 20
Start motor at 1200 rpm’s
Pressure increase 50-90 psi in less than 3 mins
Pressure not exceed 135 psi
Place vehicle in D or R, P brake must restrain from movement
Engage parking brake and return to N

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10
Q

COLA

A

C cut in by 95. Below 80 oos
O cut out. 120-135. Above 135 is oos
L low air and audible alarm 60-90. If alarms don’t engage by 60= OOS
A air leakage. 3 psi engines 4 psi tillers

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11
Q

Drums at what temp are subject to brake fade?

A

800-1000 degrees

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12
Q

Axillary brakes

A

Jacobs brake
Telma driveline retarder
Allison transmission retarder

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13
Q

Jake brake

A

Integrated into motor cylinders, uses motor to absorb energy
Engages when accelerator release
Disengages when accelerator depressed or RPM below 1000

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14
Q

Telma 4 stages

A

Stage 1 and 2- release accelerator
Stage 3- depress brake lightly
Stage 4- depress brake hard

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15
Q

Transmission retarder

A

Vaned flywheel in transmission
Oil directed into flywheel to slow transmission

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16
Q

2 operator interventions with DEF

A

Active regen
Filling def tank

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17
Q

Def regen light solid vs flashing vs flashing with check engine

A

Passive is needed vs more urgent need vs immediate active regen required

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18
Q

Def regen light with thermometer indicates

A

High exhaust temp. No need for service. Regen created high exhaust temp

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19
Q

Speed for passive regen

A

40 mph

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20
Q

Manual (active, parked) regen

A

Remain in service. Hit manual regen switch. Revs up to1100 rpm. Remain with vehicle. 5-20 mins.

Cancels if break pedal depressed. “Regen inhibit” button pressed

Clearance of 5 ft from exhaust required

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21
Q

Freezing point of def

A

12 degrees

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22
Q

Never engage differential lock when

A

Greater than 25 mph or wheels spinning

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23
Q

What is required to complete defect report?

A

Mileage
Engine hours
Pump hours
Generator hours

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24
Q

How much of tires surface is in contact with road at any time?

A

10%

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25
Q

Which brakes lock first?

A

Front before rear to prevent spin out

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26
Q

Once vehicle swings more than ___ degrees, steering correction will not be effective

A

25 degrees

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27
Q

Entering intersection occurs when front bumper crosses

A

Into cross-traffic

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28
Q

Human eye takes __ seconds to recover from being blinded by bright light

A

7 seconds

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29
Q

Cone spacing
Less than 45 mph
Greater than 45

A

Greater than 45 20 ft
Less than 45 40 ft

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30
Q

Weight distribution front rear axle

A

1/3 front
2/3 rear

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31
Q

Minimum recommended tread depth emergency vehicles

A

4/32 inches

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32
Q

Check slack adjusters for movement no more than ___

A

1 inch

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33
Q

Due regard

A

Reasonably careful

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34
Q

Gross negligence

A

Reckless disregard

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35
Q

Willful and wanton

A

Intentional with careless indifference

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36
Q

Spotter should be how far from tailboard?

A

10-20 ft

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37
Q

What is intersection?

A

Anywhere that other vehicle may cross your path

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38
Q

Uncontrolled intersection

A

Does not have control device (stop sign, yield sign, traffic signal, railroad gate)

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39
Q

Change siren cadence no less than ___ ft from intersection

A

200

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40
Q

Safe following distance accounts for

A

Perception time, reaction time, brake time

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41
Q

4 second rule

A

Follow 4 seconds at 40 mph plus 1 second per 10 mph over. Add 1 second more per 10 mph in ADVERSE WEATHER

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42
Q

What hand position on steering wheel allows maximal directional control?

A

9 and 3

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43
Q

4 skids

A

Braking, power, cornering, hydroplane

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44
Q

Oxygen limit

A

19.5-23.5

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45
Q

How much o2 must be present for accurate LEL readings?

A

At least 10%

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46
Q

H2s alarm

A

10 ppm

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47
Q

Combustible gas and O2 sensors display in terms of ____. Toxi sensors display in terms of ___

A

Combustible-percent
Toxic-Ppm

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48
Q

Co sensors have cross sensitivity to what?

A

H and ENE’s (acetylene, ethylene)

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49
Q

Lel ___ work with extreme caution

A

10-25%

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50
Q

LEL greater than ___ withdraw immediately

A

25%

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51
Q

CO is IDLH at and LEL IS

A

1200 ppm
125,000 ppm

52
Q

H2s scba, idlh

A

5 ppm, 100 ppm

53
Q

Normal gamma radiation

A

5-25

54
Q

Class 123 leaks

A

1 wet
2 form drop not fall
3 drops fall

55
Q

75 80 80 rule

A

75 degree angle
80 percent elevation
80 psi nozzle

56
Q

Operations requiring more than ___ gpm often require elevated master streams

A

700 gpm

57
Q

Epu (emergency pump unit) limitations

A

Don’t run for more than 30 mins without allowing 30 mins cooling

58
Q

Angle between ladder pipe and control handle

A

130 degrees

59
Q

Secure hose with

A

3 rope hose straps
One at tip (3-4 ft behind coupling)
One in center
One at turntable

60
Q

Maintain clearance __ ft from power lines

A

10

61
Q

Scrub area for towers vs aeriel ladders

A

Towers-ground floor up
Aeriel ladders- 2-3 floor up

62
Q

If fire is on upper floors of 5 story building aeriel aparatus should position ___ of fire apparatus

A

Outside

63
Q

If building is greater than 5 stories aerial should be placed

A

Inside engine

64
Q

Aerials are rated for winds up to

A

35 mph

65
Q

Ice accumulation greater than ___ should be a concern

A

1/4 inch

66
Q

Park aparatus ___ ft from right of way

A

25 ft

67
Q

Counterweight in elevator is

A

Cars dead weight plus 40% designed live load

68
Q

Air brake systems that can be used for pneumatic tools operate at ___ psi

A

120 psi

69
Q

On tractor trailer ___ color is normal breaking and ___ is emergency airline

A

Blue normal
Red emergency

70
Q

Hose lengths between ___ and ___ ft

A

16 and 200 (aparatus hose reel) ft

71
Q

Minimum fire service air hose diameter

A

3/8 inch

72
Q

Most air tools air pressure if

A

90 psi

73
Q

Airbag working pressures

A

7-145 psi

74
Q

Bar in psi

A

1 bar=100 kpa=14.5 psi

75
Q

Low and medium pressure air bags use ___ air volume and ___ diameter

A

High, large

76
Q

Airbag capacity

A

Capacity= operating pressure X surface area

77
Q

High pressure airbags rated at ___ inch lift

A

1 inch lift

78
Q

Once bag reached max height, it’s rated capacity is reduced by ___ percent

A

50 percent

79
Q

Max inflation height is equal to

A

Half length of shortest side

80
Q

Medium and low pressure airbags provide rated capacity during ____ of lift. And reach max stability at___

A

Entire lift
Max Height of lift

81
Q

Two ways to use cribbing with airbags

A

Supporting the load, supporting the air bags

82
Q

Top of box crib needs to be ___

A

Solid layer

83
Q

When on soft ground bottom layer of cribbing should be ___

A

Solid

84
Q

Minimum __ x __box crib layout must be used with airbags

A

3x3

85
Q

Airbags should be hysdrostatically tested every ___ years

A

5

86
Q

Airbags have an approximate working life of ___ years

A

10 years

87
Q

T or false. All fluids are compressible to some extent

A

True

88
Q

There are two categories of fluids

A

Compressible- density significantly changes with pressure

Incompressible-density does not significantly change with pressure

89
Q

____ are often considered incompressible fluids?

A

Liquids

90
Q

Pascals law

A

Any change in pressure to a combined fluid will result in an equal change in pressure throughout the fluid and walls to the container

91
Q

Pressure = ____/_____
Force = ____ x ____

A

Pressure= force / area
Force = pressure x area

92
Q

A floor jack is a class ___ lever

A

3

93
Q

___ pressure rescue tools provide more precision

A

Low pressure ( operate slower)

94
Q

Low pressure rescue tools ___ psi
High pressure ___ psi

A

Low 5000
High 10000

95
Q

Stage 1 rescue tool is ___ pressure/ ___ flow
Stage 2 is ___ pressure/ ___ flow

A

Stage 1 low pressure/ high flow
Stage 2 high pressure/ low flow

96
Q

Wood cribbing can crush ___% of its height before failing

A

20

97
Q

Minimum __ growth rings per inch of cribbing

A

8

98
Q

Tight knot no more than ___ in. In diameter

A

1.5

99
Q

Loose knot no more that ___ in. In diameter for wood

A

3/4 in

100
Q

Douglas fir vs oak

A

For gives warning, oak catastrophic failure.

Oak 1.5 times stronger than Douglas fir

101
Q

Loading Douglas fir or southern pine perpendicular vs parallel to the grain bearing in PSI

A

Perp- 500 psi
Parallel- 650 psi

102
Q

Max height to width ratio of a box crib

A

3:1

103
Q

4x4 will support
6x6 will support

A

4x4 6000
6x6 15000

104
Q

Unstable parallellagram or triangular cribs have height to width ratio of

A

1:1

105
Q

Define footprint

A

Area of cribbing outside points of contact (width is just points of contact and footprint is not included in calculation)

106
Q

4 points of contact height to width ratio
2 points of contact
1 point of contact

A

4- 3:1
2- 1.5:1
1- 1:1

107
Q

No more than __ peices of cribbing stacked in the same direction

A

2

108
Q

Vertical post shoring
Size (4x4 or 6x6)
Length (up to)
Strength lbs

A

4x4- 8000 lbs up to 8 ft long
6x6- 20,000 lbs up to 12 ft long

109
Q

Point of taker shore

A

Stabilize horizontal movement

110
Q

2 stroke saw vs 4 stroke saw

A

2 stroke- compression and combustion stroke (inefficient)
4 stroke- compression, combustion and exhaust strokes

111
Q

Chain saw chain pitch vs gauge

A

Pitch- distance between 3 consecutive rivets, decided by 2, defines size
Gauge-drive links thickness

112
Q

Define slag

A

Molten iron oxide

113
Q

Acetylene uel

A

100%

114
Q

Acetylene, propane, methyl acetylene-propadiene MAPP

A

Acetylene- highest flame temp
Propane- greater total heat combustion
MAPP- least combustible but can be used at higher pressures

115
Q

Acetylene flammable range

A

2.5-81 %

116
Q

Petrogen torch gas tank psi remain above ___ psi. When it reaches that psi, re-charge the tank to ___ psi

A

10 psi, 20 psi

117
Q

Plasma arc cut master 82 __V and ___psi

A

220 V
100 psi

118
Q

Capacitors can hold a back up power supply for up to ___ mins

A

30 mins

119
Q

When disabling a battery, cut the ___ and then the ___

A

Negative then positive

120
Q

Three types of seatbelt pretentioners

A

Mechanical
Electric
Pyrotechnic

121
Q

Engage automatic tire chains when

A

Vehicle is moving

122
Q

If snowchains are installed in an allsteer which function must be disabled?

A

The allsteer function

123
Q

What is max driving speed for ALL chains?

A

25 mph

124
Q

Three conditions that must be met for auto primer to engage

A

Ok to pump light illuminated
Auto prime is activated
Pump discharge pressure drops below 20 psi

125
Q

Class b afff-atc percentages for hydrocarbon and polar solvent

A

Hydrocarbon -1%
Polar solvent- 3%

126
Q

Pierce how height length weight

A

9’6” tall
30’1” long
40240 lbs

127
Q

Genesis tools operating pressure

A

10,000 psi

Masters Test (10 decks)

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